For many home-improvement projects, there’s no longer a need to lug a notebook and a heavy toolbox from room to room. A handful of digital apps have put significant renovation power right into your pocket. Here are a few of the best

Concept-car designs give us the auto industry at its most optimistic, creative, and, occasionally, impractical. Concepts always get attention, but the following cars, many which debuted at auto shows in 2011, especially turned heads. Here’s what the four-wheeled future just might look like